Steam-heating system for sleeping-cars.



E. H. GOLD. STEAM HEATING SYSTEM FOR SLEEPING CABS.

APPLICATION TILED T13R21. 1910.

Patented Mar. 21, 1911.

4 SHEETS-SHEET 1.

E. 'H. GOLD. STEAMHEATING SYSTEM FOR SLEEPING CARS.

APPLICATION I'ILBD $113.21, 1910.

Patented Mar. 21, 1911. I

4 SHEETS-SHEET 2.

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E. H. GOLD. STEAM HEATING SYSTEM FOR SLEEPING CARS.

APPLICATION FILED FEB.21,1910.

987,566. Patented Mar. 21, 1911-.

4 SHEETS-SHEET 3.

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E. H. GOLD.

STEAM HEATING SYSTEM FOR. SLEEPING CARS.

APPLIUATION TILED FEB.21, 1910.

Patented Mar. 21, 1911 4 SHEETS-SHEET 4.

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UNITED STATES, PATENT OFFICE. 1

serum H. com), or cnrcaeo, rumors.

. STEAM-HEATING SYSTEM FOR SLEEPLNG-CABS.

Specification of Lettersfatent. Pa d'p .21 1911- ori inalapplicatiomflled November as, 1903*, Serial in 464,057. Divideda-nd thisapplication filed February 21., 19,10.

To aZl'whom it concern:

Beit known that I, EGBERT H. Gonna citizen of the United States,residing at Chica min the county of Cook and Stateof I1'l1nois,haveinventcdcertain new and useful Improvements Systems for Sleeping-Cars,of which the following'is a specification.

My invention relates to a steam heating system which is especiallyintended and adapted for-the heating of sleeping cars, although thesystem or certain of its featuresat least, might'beemployed upon othersorts of railroad cars, or in other situations Where like conditionsprevail.

The invention has for its primary object to provide a heating system ofnew andimproved construction in which the heating or radiating meanscomprises two separate radiating units," radiators or coils, which areadapted to receive the heating medium from a common source of supply andwhich are arrangedclose together so that one heats the same regionheated by theother, or a portion thereof, In such a system when appliedto the heating ofa sleeping car, or the like, one radiator or coil ispreferably arranged so that itruns the entire length of a car adjacentthe water pipes and their fittings and attachments. This coil isdesigned to be kept constantly supplied with the heating medium wheneverthe car is to be heated at all; and as a result sufficient heat isalways provided in the right places to keep the water pipes fromfreezing up. Furthermore if the car is to be heated at all it isheatedevenly and throughout its entire length. This radiator may betermed aprimary radiator. 7' The other-coil which maybe termed a secondary orsupplemental radiator'is intended to be used only when an, additionalamount of heat is required as for example during, the daytime in severeweather or when the car is first heated up. In the sleeping car theprimary radiator, as stated, will run the entire length of the car whilethe supplemental radiator may extend-only through a portion of the car,as for example through the berth section.

There. may-"be other similar supplemental coils in the-toilet andcompartment sections if desired. If, in a system of'thisj'sort, con-isisting of two coils primary and supple-- mental connected'up to acommon source of supply and utilized for'the' circulation of inSteam-Heating Serial No. 545,133. I

vapor steam by the control of inflow in accordance with the thermostaticcondition of outflow, the vapor were allowed to enter and flow througheither coil, when both are intended to be used, itwould inevitablyfollow=the path of least resistance, to a greateffective resistance ofsaid coil so that, in-

the event of the supplemental coil being opened up, the medium iscompelled to flow' through the latter aswell as the former.

Preferably, my system contemplates the control of inflow to the tworadiators in response to the presence of steam at the common outlet ofthe radiators. This being the case, steam will be supplied to theradiators,

when both are used, at a relatively high pressure until steam is forcedthrough one or both of the coils to the common out-let. If theobstructing device is properly designed with respect to the resistanceof the auxiliary coil, the resistance in the primary due to the trappingof water of condensation will not be overcome until substantially thetime when the auxiliary is filled with steam.

Preferably, and this is one-of the sub,- sid'iary objects of myinvention, the obstructing loop is provided with a drip pipe,'ofsuitably smallerdiameter than the .loop which extends across the loopand which serves to carry off the water of condensation when 'steamhasbeen shut off from this coil so as to prevent, in suchcase. the trappingof water in the radiator; this drip pipe, however, being so small thatit does not prevent the trapping of a part of the condensation undernormal working conditions.

A further object of my invention is to provide a suitable steam heatingsystem for ,railway sleeping cars and the like which will itake theplace of the hot water systems which arein general use upon cars of thissortand which are objectionable because of the sluggishness of themedium and thedif ficulty of accurately controlling the same should behigher in the daytime than at night, for example v The invention has forfurther obj cots such rangements and devices in heating systems as willbe hereinafter described and claimed.

The invention is illustrated in a preferred elnb'odlment'and in certainmodifications 1n' to the protection of the water pipes. Fig.- 2 is avertical section taken through apre ferred form of obstructing device.Fig. 3 is a similar view illustrating a preferred form of controlhndevice. Fig. 4 a similar view sure clearnesss The car has the central orof a valve suitable for use in connection with the auxiliary coil. Fig.5a sectional plan of the four-Way valve employed in connec tion withtheprimary radiator. Fig. 6 a sectional view-taken on line 6-6. of Fi 5,looking in thedirection of the arrows. ig.

7 a diagrammatic view of a modified form of heating system, and Fig. '8a similar view illustrating another modification.

Like characters of reference indicate like parts 'in' the severalfigures of the draw-= mgs.

Referring first to Figs. sents the flooring of the car, the centerportion of which is broken away in order that the essential features ofmy invention may be shown on a sufficiently large scale to inseatingortion B provided with the usual seats in icated at B. At one end of thecar is alavatory C provided with the two wash bowls C, C and thedental-bowl C Adjacent is-the toilet D with'the closet'D'. At the otherside of the lavatory is the drawing room E having next toit the toiletroom F'with the bowl F and closet F At the other end of the car "is thelavatory and, smoking room having the wash bowls G anddental bowl Gtoilet room H with the closet H. A hot water pipe I leads from a sourceof supply of hot water not shown) along the side of the car through thedrawing room E, lavatory C and the rooms adjacent, and has branch pipesi leading to the several wash bowls. Similarly a cold water'pipe J leadsfrom a source of supply of cold water along this side of the car and hasthe. several branch pipes 7' leading to the several bowls and closets.On the other side and at the other end the car are the corresponding 1.and 2, A repre- Adjacent is the hot water pipes I having branches z" andthe cold water pipe J having'the branches j.

In Fig. 1 thepipes are shown diagrammatically outside otthe car. Thepipes, both the water pipes andthe steam pipes, to

' be hereafterreferred to, are in practice'arother new and improvedconstruct-ions, arv ranged along'fthe side of the car in the customarymanner. It is notattempted to show all of the water piping in the carbut arrangementof the water pipes and of the fixtures which they supplymight, of course,

be employedwithout departure from my invention.

In "the car/shown, as is ordinarily the case, two separate systemsofradiating pipes are employed for heating opposite sides of the car.The arrangement of the various heating devices on the .slde of the carhaving the lavatory C and drawing room E will be first. described, andfrom this the arrange- .menton the other side of the car will be ieadily understood, the systems on opposite sides being in all.substantial respects the" same. In order to carryout all of thepurposeslfbf nay-present invention, a primary radiator or coil ofradiating pipes L is pro .vided which runs substantially the length ofthe car and is arranged adjacent to the water pipes I and J. It is theintention to keep this coil L under steam 'at all times when the .carrequires artificial heating.

-The arrangement of the coil adjacent the water pipes serves to keepthe'latter'from freezing. The heat from this coil will furthermore besuflicient, in connection with a similar primary coil on the oppositeside of the car',.to keep the car warm in moderate winter weather andeven 1n colder weather during the night hours.- This radiator is shownas provided with the loops L which lie adjacent, as shown, to certain ofthe branch water pipes. It will be understood, however,-that therepresentation in Fig. 1 of the radiator L ispurely diagrammatic. Inpractice, the construction of the coil will depend 'upon the, de-ign ofthe particular car on which it is used and other obvious considerations.To supplement this coil, one

or more auiriliar'y coils are provided which are used, ordinarily, onlyin cold weather and in the daytime, or at such other time as a greateramount of heat is required than can be supplied by the primary coil. Inthe installation shown. there are. two of these auxiliary coils M and M.The car isp'ro vided with the ordinary steam train pipe N which extendsthe length of thetram' and is ordinarily supplied with steam-at high butvariable pressures'takenfrom the "locomotiv'e boiler. The radiators Land M are supplied from the train pipe N through 1,th'e common supplypipe n, n, n and contro ler,

. atmospheric pressure.

charge through a. common discharge pipe n}, n to the thermostat chamberof the controller O, as: will behereinafter described.

Preferably, a four-way. valve P is interposed in the. common supply anddischarge pipes and the inletand outlet ends of the radiator M arepreferably provided with the sepa rate shut-off and waste cocks Q, Q.

Supposing the radiator L to other less resistance to ther'fiow of steamtherethrough than the radiator M, which may be forany of "the causesabovenoted, the former will be provided with a compensating device, oneform ofwhich' is shown in detail in Fig. 2. .This device, which may besimply aportion of the coil, consists of a loop R, across whichextends-the drip pipe 7', the latter being of such relatively smallcross sectional area that itfcan not carry ofi the normal condensationof radiator L. As a result, a certain amount of water of condensationwill collect int-he radiator L in advance in this loop, the loop beingpreferably arranged near the discharge end of the radiator. The watercan only? be removed by a pressure of steam greater than Therefore whenthe radiator'M is opened up, supposing its resistance to be the same orless than that of theradiator L when provided with the loop,

steam will'just asv readily, or more readily,

as the case may be, flow through M as throughzL, the resistance due tothe ac cummulation of water of condensation in L compensating for agreater resistance of the radiator M, due to its initial low temperatureor' other causes. lVhen the steam is shut oil from the radiator L, asfor example when the car is'cut off from the train, the drip passage 1"allows the escape of water of condensation. It is obvious that thiscompensating device might be employed in other heating systems than thatshown in Fig. 1.

The auxiliary radiator M is shown as supplied independently from trainpipe N through the supply pipe 91 and controller 0.

My invention contemplates a control of inflow to'the several radiatorswhich is in response to the presence or absence of steam at the outletsof the same. A suitable form of controlling device 0, although otherdevices might be employed, isshown in Fig. 3. The device is of familiarconstruction and comprises a high pressure chamber 10 which receivessteam from the train pipe N through the pipe 72, and a low pressurechamber 11, the port 12 between the chambers being closed by a valve 13on a rod 14 connected with the bell crank 15 which is pivoted on thecasing of the controller and is rocked by a rod 16. The latter extendsthrough a discharge chamber 17 which. re-

ceives the discharge from the radiators L1 and'M, through the pipe nintoa thermos.

stat chamber 18 in which is a thermostat 19, the contraction andexpansion of which causes the rod 16 to be raised and lowered, therebyclosing and opening the port 12between chambers 10 and 11.

If valve 13 is open the steam passing through port 12 fronts; chamber 11flows to the radiators L and;M, .15.

or the one of theseradiators which is open,';::' throughthe pipen', 71?.Thisflow of steanr t0 the radiators onto the one in use will take placeuntilsaid radiators or radiator shall have been filled'with steam,when'a further inflow of steam will. cause the expulsion of steamthrough the .discharge pipe into con-2.:

tact with thermostat 19 which, expanding, will close or throttle port12. It will be seen that whenradiator L is used alone the steamwill bemaintained therein at a pressure will prevent the outflow of steam tothe thermostat until there has been a rise of pressure in the radiatorsufiicient to force the water through the loop. In this way, whenradiator M is opened up, therewill be a pressure at its inlet end whichis in excess of atmospheric pressure and which will, of

course, hasten the circulation through this c011. The accumulation ofwater of consomewhat in excess of atmospheric'preSsure because, underordinary'clrcumstances, the. ,accumulatlon of COI'ldBIlSHtlOII duetoloop R v densation in radiator L does no 'harm because itsheating-capacity is increased by the increase therein of steam pressure.ously, when both radiators are operated together, the one through whichthe circulation takes place the more rapidly will control the commoninflow. Therefore no steam is wasted. l

The controller 0 of auxiliary radiator M may be of the constructionshown in Fig:

3. Pipe niconnecting the controller 0 with" the train pipe may beprovided with the or f supply and discharge pipes of radiators L and M,the purpose of which is'to maintain a clrculation of steam through thecontroller when neither of the radiators is under steam.

A suitable form of four-way valve is shown in F igs. 5 and 6. The casingof the valve is.

divided into four chambers 20, 21, 22 and a by the webs 24, 25, 26 and27 which prox ide seats forthe valve piece consisting'ofthe) upper andlower disks ;.28 and 29 respecL-L tively, and the vertical web'30. Thevalve piece is provided with stem 31'; having the hand gri 32. Betweenthe bonnet 33 and disk 28 is the chamber 34 in which isthe.

compression spring 35. In order to obtain valve piece, the disk 28 ispreferably form with the perforation 36 so that steam is a mitted tochamber 34. Disk 29 is form'e with the perforation 37 whichregisters'w'ith 125, further seating pressure on the-top of the aperforation 38 in the bottom of the casing when the web 30 is in thefull line position ofFig. '5. Supply pipe 12. leads to chamber 20; pipe91 leads from chamber 21; dis- 5 charge pipe n leads to chamber 23; and

pipe n from chamber 22. lVith the web 30 m the full line position, steamfrom the low rom chamber 20 to chamber 22 and back to the thermostatchamber 18 of the controller.

In this position of the valve the radiators L and- M arev cut out. Atthe same time, the

perforation 37' comes into register with the rip ort 38, allowingradiator L to drain.

To a mit steam to radiator L, the valve piece is turned to the dottedline position.

, Any suitable form of'valve apparatus may be provided for opening andclosing radiator l\/I. I have shown the inlet and discharge -20 ends ofsaid. radiator as provided each with a stop and waste cock Q, theconstruction of Which is shown in Fig. 4. This valve has the port 39adapted-to be closed by the valve piece 40, the uncontrolled portll,-and a drip port 42 adapted to be closed by the valve 48.

The flow is from port 39 through the valve chamber 44.- to the port 41,in the case of the valve at the'inl'et end of the radiator, and in thereverse direction inthe case ofthe valve at the outlet end of theradiator; the drip port 42 in both instances being closed.'

and 43 are mounted so as to open and close in alternation, The valve 40is provided with a stem 45 having the hand grip 85. 46, the stem beingprovided with the threaded portion 47 engaging threading in thebonnet'48. The valve 43 has the guiding stem 49 extending into a socket50 in the cap piece 51, a compression spring 52 bearing against 40 thetop of the valve. lVithin the valvechainher 44 is a lever 53 mounted ona pivot 54.,

the ends of the lever being forked at 55,

to engagewith collars 56 and 57 on, respectively, valves 40 and 43. Byscrewing down 45 valve stem 45', port 39 is closed and the drip port 42opened.

. From the above description the operation of the heating system on theside of the car on which "the smoking room G and toilet 50 room- H arelocated will be apparent. In

the arrangement'shown for this side of the car, a' primary radiator S isprovided and two" auxiliary radiators T and T. The radiator S has theloop R corresponding to loop R of the radiator L. The flow to and from,radiators T and Sis controlled by a four-wa valve P and thermostatic controller of the construction shown. The auxiliary radiator T is providedwith stop 60 andwaste cocks Q, Q. The circulation through, the radiatorT is controlled by the thermostatic controller The steam may be shut offfrom this radiator by means of the ordinary shut-oif valve t.

- The subject matter above described was ressure chamber 11 ofcontroller 0 passes Valves In Fig. 7 I have shown diagrammatically amodified form of heating system in which one of the two radiators,either of which may be used, is provided with aloop to trap water ofcondensation, the loop preventing any escape of steam from the radiatorin which it is located until suificient steam pres-' sure hasbeen.accumulated to blow out the water seal.

The two radiators U and U from train pipe N through a common sup plypipe n, n and discharged to the thermostat chamber of the controller- 0through a common discharge pipe a Radiator U may be shut ofi by means ofvalveu and radiator U by means of valve u. In the return pipe 24 ofradiator U is the loop V which collects water of condensation so that acertain amount of steam pressure. is necessary in the radiator U beforesteam can find exit through the pipe 16 In Fig; 8'I have shown anothermodification in which the flow is in opposite directions through .thetwe ends of a single coil, the loop belng so placed as to compensate forthe differences m-resistance lIl thetwo are supplied I ends ofthe coilresulting fromthe fact that one is shorter than the other. The coil W'is supplied from train pipe N by means of the supply pipe at, n in whichis interposed the controller 0 in the manner described, the long end toof the coil discharges through pipe al to the thermostat chamber of thecontrolier and a loop Y connects the short end 'w of the coil W with itspipe n Preferably, a drip pipe 3 extends across the loop so that meansis provided for draining 11: when steam has been shutoff.

As modifications in the form, construction, arrangement, design andproportion of the various elements composing the system of my invention,will readily suggest them selves to those skilled in the art of steamheating, I do not limit myself to the particulars shown and described,except as the same are made limitations on certain of the claims.

i I claim:

1. A heating system comprising, in, com bination, a source of supply ofheatingfluid, two radiators in parallel with each other and adapted tobe put into communication with the'source of supply of heating fluid,obstructing means in the .fluid conduit from one of the radiatorscomprising an open offset loop in said conduit extending upwardly fromsaid conduit,.and a drip pipe which extends straight across said loopfrom substantially the point of-beginning of the loop of sufficientlysmaller cross sectional area than said fluid conduit to restrictthe'outfiow radiators having commonfeed and return pipes, 'sa'id returnpipe being open to the feedpipe adapted to be atmosphere and the putJntocommunication with said source of sup11ya...8ye0mmon controlling.device conin} accordance with thermostatic conditions n there'tum pipe,one of said radiators havinganiunrestrictedl"discharge intothe returne-so that the pressure therein is not sub-l stafitia'lly' aboveatmospheric pressure, and

means associated with the other of said radiators whereby steam isdischarged from the same only at a atmospheric pressure."

A heating system, comprising a source of supply of heating fluid, tworadiators arranged in parallehnadapted to be'putinto communication withsaid source of supply and having a common outlet, a controlling pressuregreater thandevice comprising a thermostat at the outletof theradiators, means for excludin heating fluid from one of said radiators,sai radiator having an unrestricted discharge throu h said outlet, .andmeans associated with Elle other of saidradiators for sealing theoutflow of steam from said radiatorex-. cept when said steamshall havereached a given pressure therein.

' 4. A heating system, comprising asourceof supply of'heating fluid, afeed pipe communicating therewith, tworadiators openingout of said feedpipe, a valve in the feed pipe intermediate said radiators, and means.

in one of said radiators for sealing the outlet of the same at pressuresunder a given pressure in the radiators, the other radiator having anunrestricted discharge, a common outlet for said radiators, a valve inthe feed pipe and a controller for the said valve which is under theinfluence of thermostatic conditions in said common outlet.

5. A heating system, comprising a source of supply of heating fluid, tworadiators, a common feed pipe for said radiators in communication withsaid source of supply, a common discharge pipe for said radiators, avalve inthe feed pipe, a controlling device to control said valve inaccordance with thermostatic conditions in the discharge pipe,.'meansfor opening and closing the nletfand outlet to one of said radiatorswithout interfering with the flow of the heating fluid through the otherradiator and to the contrdller, said first mentioned radiator hav anunobstructed discharge into the comclosets and basins and theircormecting pipes? v i ommon ing inflowof fluid tothe feed pipeconditions in the common a system of water supplypipes,

.insaid'car; a set of radiating.pipes'extend-- mg m proximity to saidclosets and basins,-

of radiating pipes,-a' common discharge pipe for the same, said secondset of radiating: p pes arrangedso as to receivesteam from the. supplypipe only when the first set of pipes .i's vunder steam, a valve tocontrol a second set of radiating pipes adjacent said first mentionedset, a source ofsiipply of 'steam,. a comm'on supply, pipe vfor saidsets the circulation through the second "set. of'

pipes, a:.single automatiecontrojller toicontrol the flow of steamthrough said 1 common supply pipe in accordance withthermostat-icdischarge pipe, and an-ofl set loop in the first mentioned 1st ofradiatingwpipes adjacent its outlet which,

retards theliow from saidset of pipes without prevent ng the same.

..7. The combination with a railway car, of

coil arranged to protect said water pipes agalnst freez ng, a secondheating coil arranged in parallelwith said first named coil.

a source of supply of heating medium with which said coils areadapted'to be put into communication, and. means for. shutting off themedium from said second mentioned coil, said coils'heing arranged sot-hat-said first-named coil may be independently supplied with theheatingmedium, but I said second-named coil can be supplied with theheating medium only when said first-named coil is so supplied.

8. The combination with a railway carprovided with a' seating sectionand with a toilet section, of a system of Water pipes in said toiletsection, a heating coil arranged to heatgboth of said sections so as toprotect said water pipes from freezing, 'a second heating coil arrangedin parallel with said first-named coil. a source of supply ofheatingmedium with which said coils are adapted to be put into communicationandmeans for shutting off the medium from said sec ond mentioned coil,said coils being arranged so that said first-named coil may-beindependently so supplied, but said secondnamed coil can receive asupply of heating.

medium only when said first-namedcoil is. also so supplied. V

9.3The combination with a sleeping car provided with an open section inthe body of the car and with inclosed sections site ends of the car,said inclosed sections bea heating at 'o poing provided with systems ofwater pipes,

of a heating coi-l arranged toheat the body of the. car and to protectsaid water. pipes against freezing. a supplemental coil ar-' rangedtoprovide additional radiation 'for the open sect-ion of the car, saidcoils being ai'rangcd inparallel asource of supplyof heating medium withwhich said coils are adapted to be put into communication, and means forshutting off the medium from said second named coil, said coils'beingarranged so that said first named coil may be independently suppliedwith the heating medium'butsaid second named coil can be sup plied-withthe heating medium only when said first named coil'is so supplied.

-10. In a heating system, the combination with the apartment to beheated, of a source of supply of steam, tworad-iators which areconnected together in parallel adapted to be put in communication withsaid source of. supply, and located in said apartment so that onesupplements the other in heating the same and open to the atmosphere attheir discharge ends, one of said radiators being constructed so as tooffer less resistance than" the other to the flow of steam therethrough,a 1d an obstructingudevice for said radiator of less resistance,comprisingia discharge pipe having a loop to trap water of condensationextending upwardly from said pipe, and al-drippipe which extends acrossthe'loop from one side to the other, but is of sufliciently smallerdiameter than the loop, so as not to destroy the trap under normaloperating conditions.

11. In a heating system, the combination with the apartment to'beheated, of a source of supply of steam, tu 'oradiators located in saida'partmel'it so that one supplements the other in heating the same, acommon feed pipe for said radiators communicating with" sald source ofsupply, a common discharge, pipe for the same,a valve which controls theflow of steam through the feed pipe, a thermostat in the common outletwhich, controls said valve, one .of said radiators offering lessresistance than the other to the How of steam therethrough and the otherhaving unobstructed discharge to the common discharge pipe, and meansconnected with said radiator of less resistance for trapping the waterof condensation so as to obstructthe flow of steam from said radiator tothe common outlet. f

12. A heating system comprising in combination a source of supply ofheating fluid, a radiator connected therewith, comprising a pipe havinga substantially U-shaped bend, said bend extending upwardly from thepor-. tions of said pipe on either side of the same. and adrip pipe ofsmaller cross sectional area than said first mentioned pipe and bendextending straight across said bend from substantially its point ofbeginning. substantially as and for the purpose described.

13. The combination with a railway car, of a train pipe carrying asupply of steam a. system of water pipes in said car, a heating coilwhich receives steam from said train pipe-arranged to protect said waterpipes against freezing, a second heating coil arranged adjacent to saidfirst-mentioned coil and in parallel therewith, means for shutting,

. of train 011: steam from the second mentioned coil,

said coils being arranged so that said first mentioned coil may beindependently supplied with the steam but the second-named coil ,can besupplied therewith only when said first-mentioned coil so supplied; and

means near the outlet of said first mentioned coil providing a waterseal for the pur-, pose described. t l

14. The combination with a railway car,

ipe carrying a'supply of steam, a system of water pipes'vin said car,aheating coil which receives steam from said train pipe arranged toprotect said waterpipes against freezing, a second heating coil arrangedadjacent to said first-mentioned coil and in parallel therewith, meansfor shutting off steam from the second mentioned coil, said coils beingarranged so that said firstmcntioned coil may be independently suppliedwith the steam, but the second-named coil can be supplied therewith onlywhen said first-mentioned coil is so suppliedg-said first-mentioned coilbeing formed near its outlet with a substantially .U-shaped bend; I

which extends above said portion of said:

coil. and a drip pipe which extends straight across said bend fromsubstantially the point of beginning thereof, which is of relativelysmall dian'ieter in comparison with the size of the bend for thepurposespecified.

15. The combination with a railway car.

of a train pipe carrying a supply of steam,

a system of water pipes 1n said car, a heating coil which receives steamfrom said train pipe arranged to protect said water pipes againstfreezing, a second heating coil arranged adjacent to saidfirst-mentioned coil and, in parallel therewith, means for shutting 0Hsteam from the second mentioned coil. said coils being arranged so thatsaid firstmentioned coil may be independently supplied with the steam.but the second-named.

coil can be supplied therewith only when said first-mentioned coil is sosupplied; means near the outlet of said first-mentioned coil providing awater seal for the purpose described. said .coils h ring a commondischarge pipe, and a controlling device to control the flow of steam tosaid first-mentioned coil comprising athe-rmostat in communication'w'ith'said discharge pipe.

, 1.6. The combination with a railway car of, asteam train pipe, a feedpipe communieating therewith, radiating means compris-;

mg a primary radiator which communicates with said feed pipe and isadapted to re ceive steam whenever said heating system is in'operation,and a secondary radiator arranged adjacent thereto and so that it may or,may not receive steam from said feed pipe,

as desired, but can receive steam only when steam is supplied to theprimary radiator; a

,common outlet pipe with which said radiators v are in communication;controlling means 'comprismg a valve in said feed pipe and athermostatic device located so as to bep nnder the influence of themedium in said outlet pipe and means for compelling the flow of steamthrough bothof said 1a- 5 diators when the secondary radiator is open.

- 17. The combination with a railway car of a heating system thereforembracing a steam "tram pipe, a feed pipe leadlng from said trai'n pipe,radiating means comprising a primary coil and a secondary coil adjacentthereto, both of said cells being adapted to be put. into communicationwith said feed pipe and arranged so that the primary 'coil receivessteam whenever said system is .coil is open and means for controllil'lgthe flow of steam from the train pipe to the feed pipe comprising avalvein the feed pipe and a thermostatic device located so' as to beunderthe influence of the medium passing "from the discharge pipe andarranged to actuate said valve.

- 18. The combination with a railway carnot a'system of water pipes,and" a heating system for said car embracing a steam'tram Ctlrrection inLetters Patent No. 987 566,

pipe, a feed pipe communicating therewith,

a primary radiating coil which communicafes with said feed pipe and liesadjacent to said system of water pipes so as to keep the same fromfreezing, said primary racorrection therein that oaice;

[Sean] diating coil being adapted to receive steam at all times whensaid heatingsystem is in operation, a secondaryradiating coi adjacent.to said primary radiating coil and arranged so that it may or-may notreceive steam from'said feed pipe, as desired, but can receiye steamonly when steam is supplied tothe primary radiating coil; and means forcompelling the flow of steam through both of said radiating coils whenthe secondary coilis open. v

19. The combination with arailway car, of a heating system thereforembracing a source of-supply of steam and radiating means adapted toreceive steam therefrom comprising two radiators, one adapted to extendthrough the car lengthwise thereof and the other. arranged adjacent tothe first nainedradi'ator but extending through only a portion of thedistance through'which the first radiator extends, a common supply pipeand a common discharge pipe for said radiators, and means comprising athermostat located so as to be actuated by the con' dition of the mediumin the common discharge pipe for determining the flow through saidcommon supply pipe, said radiators being arranged and controlled so thatthe steam may be circulated through the first radiator alone, or may becompelled to circulate through both of the same when both are open, butcannot/be circulated through EGBERT H. GOLD,

the second alone.

\Vitnesses P. H. TRUMAN, E. L. BREIDERT.

It is hereby certified that inLetters Patent No. 987 ,566, granted March21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois,for an improvement Steam-Heating Systems for Sleeping-Cars, an errorappears in the printed specification requiring correction as followsPage 1, line 65, the word ovecome should read overcome and that the saidLetters Patent should be read with this the same may conform to therecord otthe case in the Patent Signed and sealed this 11th day of'April, A. D., 1911.

'o. o. BI'LLINGS', I

Acting Commissioner of Patents.

and a thermostatic device located so as to bep nnder the influence ofthe medium in said outlet pipe and means for compelling the flow ofsteam through bothof said 1a- 5 diators when the secondary radiator isopen.

- 17. The combination with a railway car of a heating system thereforembracing a steam "tram pipe, a feed pipe leadlng from said trai'n pipe,radiating means comprising a primary coil and a secondary coil adjacentthereto, both of said cells being adapted to be put. into communicationwith said feed pipe and arranged so that the primary 'coil receivessteam whenever said system is .coil is open and means for controllil'lgthe flow of steam from the train pipe to the feed pipe comprising avalvein the feed pipe and a thermostatic device located so' as to beunderthe influence of the medium passing "from the discharge pipe andarranged to actuate said valve.

- 18. The combination with a railway carnot a'system of water pipes,and" a heating system for said car embracing a steam'tram Ctlrrection inLetters Patent No. 987 566,

pipe, a feed pipe communicating therewith,

a primary radiating coil which communicafes with said feed pipe and liesadjacent to said system of water pipes so as to keep the same fromfreezing, said primary racorrection therein that oaice;

[Sean] diating coil being adapted to receive steam at all times whensaid heatingsystem is in operation, a secondaryradiating coi adjacent.to said primary radiating coil and arranged so that it may or-may notreceive steam from'said feed pipe, as desired, but can receiye steamonly when steam is supplied tothe primary radiating coil; and means forcompelling the flow of steam through both of said radiating coils whenthe secondary coilis open. v

19. The combination with arailway car, of a heating system thereforembracing a source of-supply of steam and radiating means adapted toreceive steam therefrom comprising two radiators, one adapted to extendthrough the car lengthwise thereof and the other. arranged adjacent tothe first nainedradi'ator but extending through only a portion of thedistance through'which the first radiator extends, a common supply pipeand a common discharge pipe for said radiators, and means comprising athermostat located so as to be actuated by the con' dition of the mediumin the common discharge pipe for determining the flow through saidcommon supply pipe, said radiators being arranged and controlled so thatthe steam may be circulated through the first radiator alone, or may becompelled to circulate through both of the same when both are open, butcannot/be circulated through EGBERT H. GOLD,

the second alone.

\Vitnesses P. H. TRUMAN, E. L. BREIDERT.

It is hereby certified that inLetters Patent No. 987 ,566, granted March21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois,for an improvement Steam-Heating Systems for Sleeping-Cars, an errorappears in the printed specification requiring correction as followsPage 1, line 65, the word ovecome should read overcome and that the saidLetters Patent should be read with this the same may conform to therecord otthe case in the Patent Signed and sealed this 11th day of'April, A. D., 1911.

'o. o. BI'LLINGS', I

Acting Commissioner of Patents.

Cdrrection in Letters Patent No. 987,566.

It is hereby certified that in Letters Patent No. 987,566, granted March21, 1911, upon the application of Egbert H. Gold, of Chicago, Illinois,for an improvement in Steam-Heating Systemsfor Sleeping-Cars, an errorappears in the printed specification requiring correction as follows:Page 1, line 65, the word oveoome shoiild read overcome; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

Signed and sealed this 11th day of April, A. D., 1911.

C. C. BILLINGS,

[SEAL] Acting Commissioner of' Pdtents.

